Freemium

Evernote is a note taking application which keeps the notes taken in sync across all platforms using its cloud infrastructure.

Google Keep

Free

Google Keep is a cloud based note taking application.

Zim

Open Source

Zim is a graphical text editor used to maintain a collection of wiki pages.

Joplin

Open Source

Joplin is an open-source free note taking and to-do application.

CintaNotes

Freemium

CintaNotes is a freemium Microsoft Windows notetaking program.

NoteLedge

Commercial

NoteLedge note-taking and management solution.

NixNote

Open Source

NixNote is an open source client for Evernote.

ResophNotes

Free

ResophNotes is a fast note writing tool and a Simplenote client on Windows.

TreeDBNotes

Freemium

TreeDBNotes is a personal information manager and notetaking program for Windows. TreeDBNotes organizes items in a tree structure and saves all items in a sin…

Elephant

Open Source

Elephant is a notetaker with a classic interface.

Microsoft OneNote

Freemium

Microsoft OneNote is a digital note taking and sharing app from Microsoft.

Notezilla

Commercial

Notezilla is a sticky notes app for Windows.

Simplenote

Open Source

Simplenote is an easy way to keep notes, lists, ideas and more.

Tomboy

Open Source

Tomboy is a desktop note-taking application for Linux, Unix, Windows, and Mac OS X.

Firefox Sync

Open Source

Firefox Sync allows accessing your open tabs, bookmarks, history, passwords and preferences everywhere.

CherryTree

Open Source

CherryTree is an hierarchical note taking application, featuring rich text and syntax highlighting, storing data in a single xml or sqlite file.

TheBrain

Freemium

TheBrain, formerly branded PersonalBrain, is a mind mapping and personal knowledge base software.

Nimbus Note

Freemium

Nimbus Note is a powerful notes app and organizer.

The Guide

Open Source

Guide is an application that allows you create documents ("guides") which inherently have a tree (which you can modify as you please) and text associated wit…